Panduit SGMPMS25-C0 Super-Grip Masonry Push Barb, Weather Resistant Nylon 6.6, 0.25-Inch Hole, Black (100-Pack) Manufactured from black weather resistant Nylon 6.6 Push-mount anchor for insertion into a 0.25" masonry hole 0.97" Grip length for secure attachment For use with Panduit type SGM, SGI, and SGS cable ties, four-way mount RoHS compliant